A smooth running vehicle does not clunk, hiss, clank, or ghoulishly moan into the night. If you aren't sure on the source of the sound, it can make you uneasy. Is my car safe to drive? Is this issue repairable? How much will this repair cost?

The first step in understanding the issue is taking note of when the sound occurs. Certain sounds are specific to direct actions such as braking or turning the steering wheel. For instance, if you hear squealing, grinding, or clunking when you are bringing your car to a stop, it is very likely that you are having brake system troubles. Having a general idea of where the sound is coming from is the second step in getting your car back to safe, efficient operating condition.

Here are some common spooky sounds that could mean trouble ahead:

1. An all-consuming rattle of possible bones (?)

Loud isn't the right word for this sound; it's more like the growling of a monster's belly. If you're just driving along and suddenly you hear this noise, rest assured there isn't really a monster waiting under your car to eat you. No, it's possibly your catalytic converter.

2. What is that unbearable screeching?!

You were pulling up to a stop sign when you first noticed it; all alone, in the middle of nowhere, there was a screeching sound. Terrified to wait around and find out where it could be coming from, you drove off only find that when you got to the next stop sign – it had followed you!

If the sound is more of an inconsistent squeak, it could be related to your ball joints, shocks, or bushings. Either way, don't let these problems go unfixed or the little monster could pay you a visit on your way to work, ending in with a very scary towing bill.

3. Something's clunking under the hood…

Clunking under the front of the car when going over bumps (or running over zombies) causes an uneasy feeling in its occupants. Is something (or someone) under there? While it might cause a bit of a scare, clunking often indicates an issue with either the ball joints or the tie rods.

4. The sounds of death follow the turning of your key!

Uh oh, the dreaded moment when your car won't start! Does it sound like someone is clawing their way out from under your hood following silence? Maybe a ticking sound? Or, just nothingness? It might be time for a new battery, starter, spark plug, or fuse.

When you take your car to the auto repair shop, it will be very helpful to the shop manager or service writer if you know some specifics like when and how it happens. The best scenario is to take the mechanic for a ride and have them experience the noise. If they can hear the noise they can find the issue and fix it. It's scary thinking about safety and the potential cost of the repair; however, ignoring the issues can lead to even scarier problems.